Meziere Radiator Safecaps are designed to provide enhanced security and insurance that your radiator cap stays locked on. Standard radiator caps often suffer damage that can result in the cap popping off at the most inconvenient time. The safecap features a set of ramp rollers for smooth and secure fitment. The Safecap features a billet aluminum construction that will fit any SAE approved receiver while maintaining excellent integrity and a quality finish. The locking shell and clip design ensure a failsafe, secure radiator cap that will easily withstand constant wear and tear, making it perfect for circle track racing applications.